The ieRetail Calculator is the free version of quick calculator for buyers and sellers that calculates GPs, Cost, Sell, margin, and markup on a product by product basis. In this regard, the calculator can work on a product basis and the user is able to change one variable and note the commensurate changes in all the other variables for that product. You can therefore use it to calculate sell prices, cost prices, profit margins in percentages or dollars. You also have the ability to change tax (G